12 Thornhill Crescent, London, N1 1BL

This site has had 2 applications since 2021: 2 approved, 0 refused.

• P2021/2085/FUL Granted

  12 Thornhill Crescent, London, N1 1BL

  Removal of an existing modern infill extension to the rear and replacement with a new glazed extension; replacement of rear window at lower ground floor; relocation of boiler and hotwater storage tank to rear lower ground floor level; installation of York stone paving; replacement of the existing non-original front garden walls with railings to match adjacent; adjustment of grating enclosing lightwell; installation of new cast iron steps and new enclosed storage area; removal of lower ground floor sliding patio doors and replacement with timber french doors; replacement of lower ground floor window with new panelled entrance door; and bin store at lower ground floor level; damp-proofing to front vaults; installation of timber flooring over original floorboards throughout; new panelled doors, architraves; refurbished bathrooms; re-location of kitchen to front upper ground floor and enlargement of opening between front and rear rooms; adjustment of attic space. Also linked to listed building consent ref: P2021/2108/LBC.

  Decided 24 Sep 2021 Householder

1. 16 Jul 2021

   Received by Islington

2. 24 Sep 2021

   Decision issued: Approve with conditions

3. 29 Sep 2026

   Added to PlanIndex

1 later application on the register refers to this one:

• P2021/2085/FUL Granted

  12 Thornhill Crescent, London, N1 1BL

  Removal of an existing modern infill extension to the rear and replacement with a new glazed extension; replacement of rear window at lower ground floor; relocation of boiler and hotwater storage tank to rear lower ground floor level; installation of York stone paving; replacement of the existing non-original front garden walls with railings to match adjacent; adjustment of grating enclosing lightwell; installation of new cast iron steps and new enclosed storage area; removal of lower ground floor sliding patio doors and replacement with timber french doors; replacement of lower ground floor window with new panelled entrance door; and bin store at lower ground floor level; damp-proofing to front vaults; installation of timber flooring over original floorboards throughout; new panelled doors, architraves; refurbished bathrooms; re-location of kitchen to front upper ground floor and enlargement of opening between front and rear rooms; adjustment of attic space. Also linked to listed building consent ref: P2021/2108/LBC.

  Decided 24 Sep 2021 Householder

Islington granted permission on 24 September 2021, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

• 12 Thornhill Crescent, London, N1 1BL

  P2021/2085/FUL Submitted 16 Jul 2021 50 yards away

  Removal of an existing modern infill extension to the rear and replacement with a new glazed extension; replacement of rear window at lower ground floor; relocation of boiler and hotwater storage tank to rear lower ground floor level; installation of York stone paving; replacement of the existing non-original front garden walls with railings to match adjacent; adjustment of grating enclosing lightwell; installation of new cast iron steps and new enclosed storage area; removal of lower ground floor sliding patio doors and replacement with timber french doors; replacement of lower ground floor window with new panelled entrance door; and bin store at lower ground floor level; damp-proofing to front vaults; installation of timber flooring over original floorboards throughout; new panelled doors, architraves; refurbished bathrooms; re-location of kitchen to front upper ground floor and enlargement of opening between front and rear rooms; adjustment of attic space. Also linked to listed building consent ref: P2021/2108/LBC.

  Granted Householder Extension Windows or glazing 7 docs
  Domestic

• Flat C, 6 Thornhill Crescent, London, N1 1BL

  P2025/2882/FUL Submitted 21 Oct 2025 50 yards away

  Retention of replacement of a window within the existing dormer.

  Granted Full applications Loft or dormer Windows or glazing

• Flat C, 6 Thornhill Crescent, London, N1 1BL

  P2025/2883/LBC Submitted 21 Oct 2025 50 yards away

  Retrospective application for retention replacement of a window within the exist

  Granted Heritage and listed buildings Windows or glazing

• 8 Thornhill Crescent, London, N1 1BL

  P2024/3492/TRE Submitted 22 Nov 2024 50 yards away

  99% historically approved · decision due ~24 Jan

  Fig (T1) - Pollard at 3m. The tree has grown far too big for the space and needs to be brought down so it can be managed as a much smaller tree.

  Decided Trees 3 docs

• 8 Thornhill Crescent, London, N1 1BL

  P2021/2319/TRE Submitted 6 Aug 2021 50 yards away

  Rear garden Eucalyptus (T1) - Reduce height down to 2.5m (the 1st growth point).

  Granted Trees 3 docs

• 25 Huntingdon Street, London, N1 1BS

  P2025/0467/TRE Submitted 17 Feb 2025 50 yards away

  99% historically approved · decision due ~22 Apr

  T1 Ash Tree Height reduction -1.75m Spread reduction - 1.5m Removal of dead growth Repeat of maintenance work of 3-4 years ago (on a cycle that Gibbs & Haynes has carried out on a regular basis) Increasing light to garden of 25 and surrounding gardens

  Decided Trees 4 docs

• P2026/2302/LBC Granted

  32, 34, 36 & 38, Amwell Street, London, EC1R 1XT

  Replacement of internal flat entrance doors, architraves and fanlights, install

  Received 1 Sep, published by the council 7 Sep 2026 Heritage and listed buildings
• P2026/2220/LBC Granted

  34, SUDELEY STREET, LONDON, ISLINGTON, N1 8HW

  Retrospective Listed Building Consent application for reroofing the front 'butt

  Received 17 Aug, published by the council 24 Aug 2026 Heritage and listed buildings
• P2026/2272/LBC Granted

  355 St John Street, London, EC1V 4LB

  Replacement of internal flat entrance doors, architraves and fanlights, install

  Received 27 Aug, published by the council 7 Sep 2026 Heritage and listed buildings
• P2026/2309/LBC Granted

  27 Barnsbury Park, London, N1 1HQ

  Replacement of internal flat entrance doors, architraves and fanlights, install

  Received 2 Sep, published by the council 7 Sep 2026 Heritage and listed buildings
• P2026/2597/LBC Awaiting decision

  28, Gerrard Road, London, N1 8BA

  The replacement of fittings and reorganisation of first floor bathroom, the adj

  Received 1 Oct, published by the council 5 Oct 2026 Heritage and listed buildings